I am surprised at (lack of) speed

Have you tried the chipset and BIOS drivers?
 

My Computer My Computer

At a glance

Windows 7 Ultimate x86-64[email protected] 1066MHz FSB6GB DDR3 1066MHz9300M GS 256MB Dedicated (Speed) + Intel4500M...
Computer Manufacturer/Model Number
Sony Vaio Z46GDU
OS
Windows 7 Ultimate x86-64
CPU
[email protected] 1066MHz FSB
Motherboard
Sony branded
Memory
6GB DDR3 1066MHz
Graphics Card(s)
9300M GS 256MB Dedicated (Speed) + Intel4500MHD (Stamina)
Sound Card
Realtek HD Audio
Monitor(s) Displays
13.1' WXGA
Screen Resolution
1600x900
Hard Drives
320GB 7200RPM w/ 16MB cache
Internet Speed
1MB/s
Maybe you should try doing a repair install if you think that's best. I personally think things run snappier in 7 than vista and my computer was built for vista. I don't know about startup, but my shutdown is faster than it ever has been.
 

My Computer My Computer

At a glance

Windows 7 Home Premium2 AMD Athlon 64 X2NVIDIA GeForce 8200M G graphics
Computer Manufacturer/Model Number
Compaq Presario CQ60-215DX
OS
Windows 7 Home Premium
CPU
2 AMD Athlon 64 X2
Graphics Card(s)
NVIDIA GeForce 8200M G graphics
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